I have been told that you want to dry out the seeds for around 55 days before you hydrate them for planting. After that, they can stay dried until next year, or whenever you want to plant them.
You will not want to use my method, but I have been storing seeds in general for a couple of decades, and on the side, I sell seeds for peppers, dyckias, and mainly cycads. I have heard that with my method, seeds like this can stay viable for 4 or 5 years, at least. I dry out the seeds on a plate for a few days and then put them in paper packets. (paper, because it breathes, plastic bags are not good for this)I put the paper packets labeled with the species, or type, and the date they were stored and put them in a mason jar with indicating desiccant in the bottom. This will keep the seeds dry enough to avoid mold or fungus. I found something cool, that may not be needed at all, but to me, gives an extra help,I found this little devise, that REALLY works, even though it looks like it might not:
http://www.pump-n-seal.com/pumpnseal.htm
It will vacuum seal anything, and also is great for instantly marinating meat. So after I put the packets in the jar, I take the air out of it, and then put in the refrigerator, because the lower temperature keeps the seeds viable longer. I use this method for storing cycad pollen, and have used pollen that had been stored for 10 years, and it still made viable seeds.